<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>用户管理</el-breadcrumb-item>
          <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
      
      <!-- 卡片试图 -->
        <el-card class="box-card">
          <!-- 搜索与添加 -->
          <el-row :gutter="20">
            <el-col :span="7">
              <el-input type="" placeholder="请输入搜索内容" v-model="queryInfo.query" clearable @clear="getUserList">
              <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
              </el-input>
            </el-col>
            <el-col :span="4">
              <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
          </el-row>
          <!-- 用户列表区域 -->
          <el-table :data="userlist"  border stripe>           
              <el-table-column type="index" > </el-table-column> 
              <el-table-column prop="username" label="姓名" > </el-table-column> 
              <el-table-column prop="email" label="邮箱" > </el-table-column>
              <el-table-column prop="mobile" label="电话" > </el-table-column>
              <el-table-column prop="role_name" label="角色" > </el-table-column>
              <el-table-column label="状态" >
                <template v-slot="scope">   
                  <el-switch  v-model="scope.row.mg_state" @change="userStatusChange(scope.row)"></el-switch>              
                </template>
              </el-table-column>
              <el-table-column label="操作" >
                <template v-slot="scope">
                  <!-- 修改按钮 -->
                  <el-tooltip effect="dark" content="修改角色" placement="top" :enterable="false">
                  <el-button type="primary" icon="el-icon-edit" size="small" @click="showEditDialog(scope.row.id)"></el-button>
                  </el-tooltip>
                  <!-- 删除按钮 -->
                  <el-tooltip effect="dark" content="删除角色" placement="top" :enterable="false">
                  <el-button type="danger" icon="el-icon-delete" size="small" @click="removeUserById(scope.row.id)"></el-button>
                  </el-tooltip>
                  <!-- 分配按钮 -->
                  <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                  <el-button type="warning" icon="el-icon-setting" size="small" @click="setRole(scope.row)"></el-button>
                  </el-tooltip>
                </template>
              </el-table-column>           
          </el-table>
          <!-- 分页功能 -->
          <el-pagination
                  @size-change="handleSizeChange"
                  @current-change="handleCurrentChange"
                  :current-page="queryInfo.pagenum"
                  :page-sizes="[1, 2, 5, 10]"
                  :page-size="queryInfo.pagesize"
                  layout="total, sizes, prev, pager, next, jumper"
                  :total="total">
          </el-pagination>
        </el-card>

        <!-- 添加用户对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
          <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" >
            <el-form-item label="用户名" prop="username">
                 <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                 <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                 <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                 <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <!-- 对话框底部按钮区 -->
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
          </span> 
        </el-dialog>
        
        <!-- 修改用户对话框 -->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
          <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px" >
            <el-form-item label="用户名" >
            <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" >
            <el-input v-model="editForm.email" ></el-input>
            </el-form-item>
            <el-form-item label="手机号" >
            <el-input v-model="editForm.mobile" ></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
          </span>
        </el-dialog>

      <!-- 分配角色对话框 -->
      <el-dialog
        title="分配角色"  :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
        <div>
          <p>当前的用户：{{userInfo.username}}</p>
          <p>当前的角色：{{userInfo.role_name}}</p>
          <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="setRoleInfo">确 定</el-button>
        </span>
      </el-dialog>
    </div>
</template>


<script>
export default {
    data() {
      //验证邮箱
      var checkEmail = (rule, value, callback) => {
        const regEmail =/^[a-zA-Z0-9_-]+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
        if (regEmail.test(value)){
          //合法的邮箱
          return callback()
        }

        callback(new error('请输入合法的邮箱'))
      }

      //验证手机号
      var checkMobile = (rule, value, callback) => {
        const regMobile =/^[1](([3][0-9])|([4][5-9])|([5][0-3,5-9])|([6][5,6])|([7][0-8])|([8][0-9])|([9][1,8,9]))[0-9]{8}$/
        if (regMobile.test(value)){
          //合法的手机号
          return callback()
        }

        callback(new error('请输入合法的手机号'))
      }

      return {
        //获取用户列表的参数对象  
        queryInfo: {
          //搜索关键字
          query: '',
          //当前页数
          pagenum: 1,

          pagesize:2, //每页最多显示列数
        },
        userlist: [],
        total: 0,
        addDialogVisible: false,//控制添加用户对话框显示与隐藏
        //添加用户的表单数据
        addForm:{
          username: '',
          password: '',
          email: '',
          mobile: ''
        },
        //添加用户表单验证规则对象
        addFormRules:{
          username:[ 
            { required: true, message: '请输入用户名', trigger:'blur'},
            {min: 3, max: 10, message: '用户名长度在3~10个字符之间', trigger:'blur'},
          ],
          password:[ 
            { required: true, message: '请输入密码', trigger:'blur'},
            {min: 6, max: 15, message: '密码长度在6~15个字符之间', trigger:'blur'},
          ],
          email:[ 
            { required: true, message: '请输入邮箱', trigger:'blur'},
            {min: 6, max: 20, message: '邮箱长度在6~20个字符之间', trigger:'blur'},
            {validator: checkEmail, trigger:('blur') },
          ],
          mobile:[ 
            { required: true, message: '请输入手机号', trigger:'blur'},
            {min: 6, max: 15, message: '手机长度在6~15个字符之间', trigger:'blur'},
            {validator: checkMobile, trigger:('blur') },
          ],
        },
        //修改对话框的显示与隐藏
        editDialogVisible: false,
        //查询到的用户信息对象
        editForm: {},
        //修改表单的验证对象
        editFormRules: {
          email:[ 
            { required: true, message: '请输入邮箱', trigger:'blur'},
            {min: 6, max: 20, message: '邮箱长度在6~20个字符之间', trigger:'blur'},
            {validator: checkEmail, trigger:('blur') },
          ],
          mobile:[ 
            { required: true, message: '请输入手机号', trigger:'blur'},
            {min: 6, max: 15, message: '手机长度在6~15个字符之间', trigger:'blur'},
            {validator: checkMobile, trigger:('blur') },
          ],
        },
        //控制角色分配对话框的显示与隐藏
        setRoleDialogVisible: false,
        //需要被分配角色的用户信息
        userInfo : {},
        //获取到的所有角色的数据列表
        rolesList : [],
        //已选择的角色ID值
        selectedRoleId: '',
      }
      
    },

    created() {
      this.getUserList()
    },
    methods: {
      async getUserList(){
      const {data : res} = await this.$http.get('users', { params: this.queryInfo })
      console.log(res)
      if(res.meta.status !== 200){
        return this.$message.error('获取用户列表失败!')
      }
        this.userlist = res.data.users
        this.total = res.data.total 
        },
      //监听pagesize改变事件
      handleSizeChange(newSize){
      this.queryInfo.pagesize = newSize
      this.getUserList()
      },
      //监听页码值改变事件
      handleCurrentChange(newPage) {
        console.log(newPage)
        this.queryInfo.pagenum = newPage
        this.getUserList()
      },
      //监听switch开关状态
      async userStatusChange(userinfo) { 
      const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if(res.meta.status !== 200){
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败!')
      }
      this.$message.success('更新用户状态成功!')
      },
      //监听对话框关闭事件 重置表单
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },
      //确定按钮添加用户
      addUser() {
        this.$refs.addFormRef.validate(async vaild => {
          console.log(vaild)
          if(!vaild) return
          //可以发起添加用户的网络请求
          const {data: res } = await this.$http.post('users', this.addForm)
          if(res.meta.data !== 201 ){
            this.$message.error('添加用户失败! ')
          }
          this.$message.success('添加用户成功! ')
          //成功后隐藏对话框
          this.addDialogVisible = false  
          //成功后刷新列表
          this.getUserList()
        })
        
      },
      //修改信息对话框
      async showEditDialog(id) {
        console.log(id)
        const {data: res } = await this.$http.get('users/' + id)
        if(res.meta.status !== 200){
          return this.$message.error('查询用户信息失败')
        }
        this.editForm = res.data
        this.editDialogVisible = true
      },
      //监听修改用户对话框关闭事件
      editDialogClosed() {
        this.$refs.editFormRef.resetFields()  
      },
      //修改用户信息提交
      editUserInfo() {
        this.$refs.editFormRef.validate(async valid =>{
          console.log(valid)
          if(!valid) return
          //发起用户信息修改请求
          const {data: res} = await this.$http.put('users/' + this.editForm.id, { email:this.editForm.email , mobile: this.editForm.mobile})
          if(res.meta.status !== 200){
            return this.$message.error('修改用户信息失败!')
          }
          this.editDialogVisible = false
          this.getUserList()
          this.$message.success('修改用户信息成功!')
        })
      },
      //根据ID删除用户
      async removeUserById(id){
        const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
        ).catch(err => err ) 
        if (confirmResult !=='confirm') {
          return this.$message.info('已取消删除')
        }

        const {data:res} = await this.$http.delete('users/' + id)
        if(res.meta.status !== 200){
          return this.$message.error('删除失败！')
        }
        this.$message.success('删除用户成功！')
        this.getUserList()
      },
      //展示分配角色对话框
      async setRole(userInfo){
        this.userInfo = userInfo
        //在展示对话框前获得所有角色列表
        const { data:res } = await this.$http.get('roles')
        if(res.meta.status !== 200){
          return this.$message.error('获取角色列表失败！')
        }
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      },
      //点击确定按钮 分配角色
      async setRoleInfo(){
        if(!this.selectedRoleId){
          return this.$message.error('请选择要分配的角色!')
        }
        const { data:res } = await this.$http.put(`users/${this.userInfo.id}/role`,{
          rid : this.selectedRoleId
        })
        if(res.meta.status !==200){
          return this.$message.error('更新用户角色失败!')
        }
        this.$message.success('更新用户角色成功!')
        this.getUserList
        this.setRoleDialogVisible = false
      },
      //重置分配角色对话框选项
      setRoleDialogClosed(){
        this.selectedRoleId = ''
        this.userInfo = {}
      },
   }

}
</script>
<style lang="less" scoped>

</style>